Clear glass 'Kerr Self-Sealing Mason' pint canning jar

The Kerr Self-Sealing Mason jar was patented on August 31, 1915, by the Kerr Glass Manufacturing Company, founded by Alexander H. Kerr in Portland, Oregon. These jars revolutionized home canning with their two-piece lid system, making food preservation safer and more reliable for American households throughout the early to mid-20th century. The embossed 'Self-Sealing' marking and patent date help identify jars from this specific production period. Vintage Mason jars like the Kerr Self-Sealing are highly sought after by collectors of antique glassware, canning memorabilia, and Americana. These jars appeal to enthusiasts who appreciate early 20th-century domestic history, as well as crafters and decorators who repurpose them for rustic home décor, wedding centerpieces, and storage solutions. The historical significance of these jars as everyday household items from a bygone era, combined with their practical beauty and nostalgic charm, makes them enduringly popular among vintage kitchenware collectors.